./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:08:27,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:08:27,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:08:27,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:08:27,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:08:27,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:08:27,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:08:27,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:08:27,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:08:27,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:08:27,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:08:27,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:08:27,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:08:27,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:08:27,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:08:27,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:08:27,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:08:27,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:08:27,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:08:27,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:08:27,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:08:27,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:08:27,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:08:27,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:08:27,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:08:27,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:08:27,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:08:27,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:08:27,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:08:27,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:08:27,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:08:27,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:08:27,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:08:27,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:08:27,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:08:27,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:08:27,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:08:27,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:08:27,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:08:27,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:08:27,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:08:27,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 21:08:27,325 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:08:27,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:08:27,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:08:27,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:08:27,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:08:27,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:08:27,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:08:27,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:08:27,328 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:08:27,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:08:27,328 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:08:27,328 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:08:27,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:08:27,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:08:27,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:08:27,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:08:27,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:08:27,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:08:27,330 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 21:08:27,330 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:08:27,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:08:27,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:08:27,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:08:27,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:08:27,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:08:27,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:08:27,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:27,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:08:27,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:08:27,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:08:27,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:08:27,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:08:27,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:08:27,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 [2022-11-02 21:08:27,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:08:27,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:08:27,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:08:27,640 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:08:27,641 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:08:27,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/stack_longest-1.i [2022-11-02 21:08:27,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/data/8a4b5f813/98748734b6da41e58b6ca485cfaa8689/FLAG3d20b13ac [2022-11-02 21:08:28,287 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:08:28,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/sv-benchmarks/c/pthread/stack_longest-1.i [2022-11-02 21:08:28,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/data/8a4b5f813/98748734b6da41e58b6ca485cfaa8689/FLAG3d20b13ac [2022-11-02 21:08:28,561 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/data/8a4b5f813/98748734b6da41e58b6ca485cfaa8689 [2022-11-02 21:08:28,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:08:28,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:08:28,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:28,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:08:28,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:08:28,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:28" (1/1) ... [2022-11-02 21:08:28,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2e0f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:28, skipping insertion in model container [2022-11-02 21:08:28,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:28" (1/1) ... [2022-11-02 21:08:28,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:08:28,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:08:29,092 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/sv-benchmarks/c/pthread/stack_longest-1.i[41530,41543] [2022-11-02 21:08:29,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:29,147 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:08:29,199 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/sv-benchmarks/c/pthread/stack_longest-1.i[41530,41543] [2022-11-02 21:08:29,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:29,286 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:08:29,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29 WrapperNode [2022-11-02 21:08:29,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:29,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:29,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:08:29,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:08:29,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (1/1) ... [2022-11-02 21:08:29,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (1/1) ... [2022-11-02 21:08:29,375 INFO L138 Inliner]: procedures = 277, calls = 41, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 165 [2022-11-02 21:08:29,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:29,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:08:29,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:08:29,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:08:29,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (1/1) ... [2022-11-02 21:08:29,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (1/1) ... [2022-11-02 21:08:29,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (1/1) ... [2022-11-02 21:08:29,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (1/1) ... [2022-11-02 21:08:29,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (1/1) ... [2022-11-02 21:08:29,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (1/1) ... [2022-11-02 21:08:29,416 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (1/1) ... [2022-11-02 21:08:29,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (1/1) ... [2022-11-02 21:08:29,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:08:29,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:08:29,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:08:29,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:08:29,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (1/1) ... [2022-11-02 21:08:29,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:29,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:29,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:08:29,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:08:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-02 21:08:29,516 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-02 21:08:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-02 21:08:29,516 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-02 21:08:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:08:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:08:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:08:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:08:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 21:08:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:08:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:08:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:08:29,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:08:29,521 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:08:29,695 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:08:29,697 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:08:30,129 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:08:30,138 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:08:30,138 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 21:08:30,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:30 BoogieIcfgContainer [2022-11-02 21:08:30,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:08:30,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:08:30,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:08:30,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:08:30,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:08:28" (1/3) ... [2022-11-02 21:08:30,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f0d915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:30, skipping insertion in model container [2022-11-02 21:08:30,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:29" (2/3) ... [2022-11-02 21:08:30,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f0d915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:30, skipping insertion in model container [2022-11-02 21:08:30,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:30" (3/3) ... [2022-11-02 21:08:30,151 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2022-11-02 21:08:30,160 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:08:30,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:08:30,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-02 21:08:30,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:08:30,266 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 21:08:30,302 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:08:30,320 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 195 transitions, 406 flow [2022-11-02 21:08:30,331 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 195 transitions, 406 flow [2022-11-02 21:08:30,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 195 transitions, 406 flow [2022-11-02 21:08:30,471 INFO L130 PetriNetUnfolder]: 10/193 cut-off events. [2022-11-02 21:08:30,471 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:08:30,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 193 events. 10/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 501 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-11-02 21:08:30,490 INFO L118 LiptonReduction]: Number of co-enabled transitions 11596 [2022-11-02 21:08:36,949 INFO L133 LiptonReduction]: Checked pairs total: 14955 [2022-11-02 21:08:36,949 INFO L135 LiptonReduction]: Total number of compositions: 187 [2022-11-02 21:08:36,965 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 44 transitions, 104 flow [2022-11-02 21:08:37,045 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 506 states, 482 states have (on average 2.7531120331950207) internal successors, (1327), 505 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:37,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:08:37,080 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4cadedf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:08:37,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-02 21:08:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 506 states, 482 states have (on average 2.7531120331950207) internal successors, (1327), 505 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:37,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:08:37,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:37,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:37,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:37,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:37,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1389599080, now seen corresponding path program 1 times [2022-11-02 21:08:37,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:37,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179338855] [2022-11-02 21:08:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:37,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:37,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:37,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179338855] [2022-11-02 21:08:37,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179338855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:37,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:37,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:08:37,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522902777] [2022-11-02 21:08:37,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:37,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:37,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:37,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:37,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:37,544 INFO L87 Difference]: Start difference. First operand has 506 states, 482 states have (on average 2.7531120331950207) internal successors, (1327), 505 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:37,767 INFO L93 Difference]: Finished difference Result 830 states and 2140 transitions. [2022-11-02 21:08:37,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:37,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 21:08:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:37,803 INFO L225 Difference]: With dead ends: 830 [2022-11-02 21:08:37,804 INFO L226 Difference]: Without dead ends: 830 [2022-11-02 21:08:37,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:37,810 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 26 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:37,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:37,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-11-02 21:08:37,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 778. [2022-11-02 21:08:37,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 754 states have (on average 2.7705570291777186) internal successors, (2089), 777 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2089 transitions. [2022-11-02 21:08:37,917 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2089 transitions. Word has length 7 [2022-11-02 21:08:37,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:37,917 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 2089 transitions. [2022-11-02 21:08:37,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2089 transitions. [2022-11-02 21:08:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:08:37,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:37,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:37,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:08:37,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:37,921 INFO L85 PathProgramCache]: Analyzing trace with hash 12895636, now seen corresponding path program 1 times [2022-11-02 21:08:37,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:37,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979012681] [2022-11-02 21:08:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:37,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:38,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:38,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979012681] [2022-11-02 21:08:38,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979012681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:38,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:38,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:08:38,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060561445] [2022-11-02 21:08:38,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:38,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:38,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:38,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:38,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:38,034 INFO L87 Difference]: Start difference. First operand 778 states and 2089 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:38,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:38,187 INFO L93 Difference]: Finished difference Result 1266 states and 3401 transitions. [2022-11-02 21:08:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:38,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 21:08:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:38,197 INFO L225 Difference]: With dead ends: 1266 [2022-11-02 21:08:38,203 INFO L226 Difference]: Without dead ends: 1266 [2022-11-02 21:08:38,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:38,206 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 29 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:38,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:38,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-11-02 21:08:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1210. [2022-11-02 21:08:38,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1186 states have (on average 2.7951096121416525) internal successors, (3315), 1209 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 3315 transitions. [2022-11-02 21:08:38,290 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 3315 transitions. Word has length 8 [2022-11-02 21:08:38,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:38,292 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 3315 transitions. [2022-11-02 21:08:38,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 3315 transitions. [2022-11-02 21:08:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:08:38,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:38,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:38,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:08:38,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:38,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:38,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1193629217, now seen corresponding path program 1 times [2022-11-02 21:08:38,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:38,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717250967] [2022-11-02 21:08:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:38,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:38,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:38,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717250967] [2022-11-02 21:08:38,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717250967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:38,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:38,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:08:38,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709466247] [2022-11-02 21:08:38,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:38,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:38,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:38,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:38,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:38,430 INFO L87 Difference]: Start difference. First operand 1210 states and 3315 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:38,562 INFO L93 Difference]: Finished difference Result 1794 states and 4895 transitions. [2022-11-02 21:08:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:38,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:08:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:38,575 INFO L225 Difference]: With dead ends: 1794 [2022-11-02 21:08:38,575 INFO L226 Difference]: Without dead ends: 1794 [2022-11-02 21:08:38,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:38,579 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:38,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2022-11-02 21:08:38,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1698. [2022-11-02 21:08:38,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1674 states have (on average 2.8213859020310634) internal successors, (4723), 1697 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 4723 transitions. [2022-11-02 21:08:38,648 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 4723 transitions. Word has length 11 [2022-11-02 21:08:38,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:38,649 INFO L495 AbstractCegarLoop]: Abstraction has 1698 states and 4723 transitions. [2022-11-02 21:08:38,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:38,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 4723 transitions. [2022-11-02 21:08:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:08:38,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:38,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:38,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:08:38,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:38,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:38,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1923769482, now seen corresponding path program 1 times [2022-11-02 21:08:38,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:38,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683593057] [2022-11-02 21:08:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:38,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:38,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683593057] [2022-11-02 21:08:38,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683593057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:38,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169336322] [2022-11-02 21:08:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:38,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:38,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:38,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:38,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:08:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:08:38,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:39,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:39,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169336322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:39,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:39,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 21:08:39,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758315578] [2022-11-02 21:08:39,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:39,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:39,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:39,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:39,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:39,054 INFO L87 Difference]: Start difference. First operand 1698 states and 4723 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:39,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:39,292 INFO L93 Difference]: Finished difference Result 1686 states and 4602 transitions. [2022-11-02 21:08:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:08:39,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:08:39,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:39,303 INFO L225 Difference]: With dead ends: 1686 [2022-11-02 21:08:39,303 INFO L226 Difference]: Without dead ends: 1686 [2022-11-02 21:08:39,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:39,304 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 62 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:39,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:08:39,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2022-11-02 21:08:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1622. [2022-11-02 21:08:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1603 states have (on average 2.809731752963194) internal successors, (4504), 1621 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 4504 transitions. [2022-11-02 21:08:39,358 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 4504 transitions. Word has length 11 [2022-11-02 21:08:39,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:39,358 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 4504 transitions. [2022-11-02 21:08:39,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 4504 transitions. [2022-11-02 21:08:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:08:39,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:39,360 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:39,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:39,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:39,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:39,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1923769451, now seen corresponding path program 1 times [2022-11-02 21:08:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:39,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250985653] [2022-11-02 21:08:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:39,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:39,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:39,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250985653] [2022-11-02 21:08:39,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250985653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:39,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:39,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:08:39,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638784799] [2022-11-02 21:08:39,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:39,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:39,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:39,629 INFO L87 Difference]: Start difference. First operand 1622 states and 4504 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:39,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:39,734 INFO L93 Difference]: Finished difference Result 1546 states and 4285 transitions. [2022-11-02 21:08:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:39,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:08:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:39,742 INFO L225 Difference]: With dead ends: 1546 [2022-11-02 21:08:39,743 INFO L226 Difference]: Without dead ends: 1546 [2022-11-02 21:08:39,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:39,744 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 29 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:39,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2022-11-02 21:08:39,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1050. [2022-11-02 21:08:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1036 states have (on average 2.80984555984556) internal successors, (2911), 1049 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2911 transitions. [2022-11-02 21:08:39,785 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2911 transitions. Word has length 11 [2022-11-02 21:08:39,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:39,785 INFO L495 AbstractCegarLoop]: Abstraction has 1050 states and 2911 transitions. [2022-11-02 21:08:39,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:39,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2911 transitions. [2022-11-02 21:08:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:08:39,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:39,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:39,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:08:39,787 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash 425028283, now seen corresponding path program 1 times [2022-11-02 21:08:39,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:39,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390335804] [2022-11-02 21:08:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:39,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:39,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:39,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390335804] [2022-11-02 21:08:39,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390335804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:39,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:39,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:08:39,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127508636] [2022-11-02 21:08:39,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:39,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:39,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:39,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:08:39,911 INFO L87 Difference]: Start difference. First operand 1050 states and 2911 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:40,122 INFO L93 Difference]: Finished difference Result 1122 states and 2986 transitions. [2022-11-02 21:08:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:08:40,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 21:08:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:40,130 INFO L225 Difference]: With dead ends: 1122 [2022-11-02 21:08:40,130 INFO L226 Difference]: Without dead ends: 1094 [2022-11-02 21:08:40,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:40,131 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 57 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:40,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 5 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:08:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2022-11-02 21:08:40,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 848. [2022-11-02 21:08:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 830 states have (on average 2.7012048192771085) internal successors, (2242), 847 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2242 transitions. [2022-11-02 21:08:40,177 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2242 transitions. Word has length 14 [2022-11-02 21:08:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:40,177 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 2242 transitions. [2022-11-02 21:08:40,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2242 transitions. [2022-11-02 21:08:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:08:40,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:40,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:40,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:08:40,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash 455367290, now seen corresponding path program 1 times [2022-11-02 21:08:40,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:40,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401281066] [2022-11-02 21:08:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:40,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:40,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:40,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401281066] [2022-11-02 21:08:40,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401281066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:40,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:40,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:08:40,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787869323] [2022-11-02 21:08:40,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:40,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:40,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:40,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:40,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:40,292 INFO L87 Difference]: Start difference. First operand 848 states and 2242 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:40,378 INFO L93 Difference]: Finished difference Result 440 states and 951 transitions. [2022-11-02 21:08:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:40,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 21:08:40,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:40,380 INFO L225 Difference]: With dead ends: 440 [2022-11-02 21:08:40,380 INFO L226 Difference]: Without dead ends: 434 [2022-11-02 21:08:40,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:40,382 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:40,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-02 21:08:40,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2022-11-02 21:08:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 416 states have (on average 2.235576923076923) internal successors, (930), 429 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 930 transitions. [2022-11-02 21:08:40,394 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 930 transitions. Word has length 15 [2022-11-02 21:08:40,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:40,394 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 930 transitions. [2022-11-02 21:08:40,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,395 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 930 transitions. [2022-11-02 21:08:40,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:08:40,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:40,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:40,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:08:40,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:40,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash -337721059, now seen corresponding path program 1 times [2022-11-02 21:08:40,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:40,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067932907] [2022-11-02 21:08:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:40,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:40,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:40,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067932907] [2022-11-02 21:08:40,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067932907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:40,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78878758] [2022-11-02 21:08:40,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:40,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:40,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:40,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:40,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:08:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:08:40,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:40,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:40,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:40,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78878758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:40,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:40,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-02 21:08:40,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900062179] [2022-11-02 21:08:40,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:40,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:08:40,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:40,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:08:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:40,730 INFO L87 Difference]: Start difference. First operand 430 states and 930 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:40,995 INFO L93 Difference]: Finished difference Result 764 states and 1711 transitions. [2022-11-02 21:08:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:40,996 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 21:08:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:40,999 INFO L225 Difference]: With dead ends: 764 [2022-11-02 21:08:41,000 INFO L226 Difference]: Without dead ends: 764 [2022-11-02 21:08:41,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:41,001 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 130 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:41,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 7 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:08:41,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-02 21:08:41,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 670. [2022-11-02 21:08:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 656 states have (on average 2.3353658536585367) internal successors, (1532), 669 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1532 transitions. [2022-11-02 21:08:41,022 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1532 transitions. Word has length 15 [2022-11-02 21:08:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:41,022 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1532 transitions. [2022-11-02 21:08:41,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1532 transitions. [2022-11-02 21:08:41,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:08:41,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:41,024 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:41,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:41,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:41,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:41,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash -337762233, now seen corresponding path program 1 times [2022-11-02 21:08:41,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:41,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335368897] [2022-11-02 21:08:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:41,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:41,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:41,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335368897] [2022-11-02 21:08:41,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335368897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:41,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84869816] [2022-11-02 21:08:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:41,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:41,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:41,330 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:41,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:08:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:08:41,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:41,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:41,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84869816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:41,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:41,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 21:08:41,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328033148] [2022-11-02 21:08:41,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:41,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:41,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:41,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:41,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:41,509 INFO L87 Difference]: Start difference. First operand 670 states and 1532 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:41,696 INFO L93 Difference]: Finished difference Result 776 states and 1740 transitions. [2022-11-02 21:08:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:08:41,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 21:08:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:41,700 INFO L225 Difference]: With dead ends: 776 [2022-11-02 21:08:41,700 INFO L226 Difference]: Without dead ends: 776 [2022-11-02 21:08:41,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:41,702 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 39 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:41,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:08:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-11-02 21:08:41,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 758. [2022-11-02 21:08:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 745 states have (on average 2.3060402684563757) internal successors, (1718), 757 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1718 transitions. [2022-11-02 21:08:41,727 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1718 transitions. Word has length 15 [2022-11-02 21:08:41,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:41,727 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 1718 transitions. [2022-11-02 21:08:41,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:41,727 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1718 transitions. [2022-11-02 21:08:41,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:08:41,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:41,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:08:41,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:41,951 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash 49783638, now seen corresponding path program 1 times [2022-11-02 21:08:41,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:41,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884399110] [2022-11-02 21:08:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:41,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:42,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:42,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884399110] [2022-11-02 21:08:42,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884399110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:42,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205764779] [2022-11-02 21:08:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:42,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:42,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:42,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:42,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:08:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:42,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:08:42,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:42,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:42,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205764779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:42,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:42,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 21:08:42,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139687675] [2022-11-02 21:08:42,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:42,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:42,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:42,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:42,197 INFO L87 Difference]: Start difference. First operand 758 states and 1718 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:42,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:42,300 INFO L93 Difference]: Finished difference Result 690 states and 1560 transitions. [2022-11-02 21:08:42,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:08:42,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:08:42,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:42,304 INFO L225 Difference]: With dead ends: 690 [2022-11-02 21:08:42,304 INFO L226 Difference]: Without dead ends: 690 [2022-11-02 21:08:42,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:42,305 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 52 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:42,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 5 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-02 21:08:42,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2022-11-02 21:08:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 681 states have (on average 2.290748898678414) internal successors, (1560), 689 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1560 transitions. [2022-11-02 21:08:42,325 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1560 transitions. Word has length 19 [2022-11-02 21:08:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:42,326 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1560 transitions. [2022-11-02 21:08:42,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1560 transitions. [2022-11-02 21:08:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:08:42,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:42,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:08:42,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:42,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:08:42,552 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:42,553 INFO L85 PathProgramCache]: Analyzing trace with hash 49783639, now seen corresponding path program 1 times [2022-11-02 21:08:42,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:42,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299731739] [2022-11-02 21:08:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:42,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:42,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299731739] [2022-11-02 21:08:42,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299731739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:42,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:42,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:08:42,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981181513] [2022-11-02 21:08:42,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:42,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:42,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:42,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:42,629 INFO L87 Difference]: Start difference. First operand 690 states and 1560 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:42,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:42,701 INFO L93 Difference]: Finished difference Result 622 states and 1402 transitions. [2022-11-02 21:08:42,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:42,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:08:42,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:42,704 INFO L225 Difference]: With dead ends: 622 [2022-11-02 21:08:42,705 INFO L226 Difference]: Without dead ends: 622 [2022-11-02 21:08:42,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:42,706 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:42,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-11-02 21:08:42,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 568. [2022-11-02 21:08:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 563 states have (on average 2.282415630550622) internal successors, (1285), 567 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1285 transitions. [2022-11-02 21:08:42,722 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1285 transitions. Word has length 19 [2022-11-02 21:08:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:42,722 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 1285 transitions. [2022-11-02 21:08:42,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1285 transitions. [2022-11-02 21:08:42,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:08:42,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:42,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:42,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:08:42,724 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1782563078, now seen corresponding path program 1 times [2022-11-02 21:08:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:42,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468232407] [2022-11-02 21:08:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:42,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:42,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:42,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468232407] [2022-11-02 21:08:42,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468232407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:42,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133203166] [2022-11-02 21:08:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:42,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:42,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:42,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:42,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:08:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:42,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:08:42,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:43,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:43,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133203166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:43,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:43,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-11-02 21:08:43,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457542823] [2022-11-02 21:08:43,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:43,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:08:43,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:08:43,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:08:43,145 INFO L87 Difference]: Start difference. First operand 568 states and 1285 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:43,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:43,614 INFO L93 Difference]: Finished difference Result 900 states and 2095 transitions. [2022-11-02 21:08:43,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:08:43,615 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-02 21:08:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:43,619 INFO L225 Difference]: With dead ends: 900 [2022-11-02 21:08:43,619 INFO L226 Difference]: Without dead ends: 900 [2022-11-02 21:08:43,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:08:43,620 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 133 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:43,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 15 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:43,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-11-02 21:08:43,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 710. [2022-11-02 21:08:43,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 705 states have (on average 2.329078014184397) internal successors, (1642), 709 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1642 transitions. [2022-11-02 21:08:43,644 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1642 transitions. Word has length 25 [2022-11-02 21:08:43,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:43,645 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1642 transitions. [2022-11-02 21:08:43,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:43,645 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1642 transitions. [2022-11-02 21:08:43,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:08:43,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:43,647 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:43,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:43,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:43,862 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:43,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:43,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1782563079, now seen corresponding path program 1 times [2022-11-02 21:08:43,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:43,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497569347] [2022-11-02 21:08:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:43,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:44,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:44,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:44,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497569347] [2022-11-02 21:08:44,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497569347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:44,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:44,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:08:44,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571209348] [2022-11-02 21:08:44,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:44,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:44,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:44,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:44,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:44,027 INFO L87 Difference]: Start difference. First operand 710 states and 1642 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:44,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:44,254 INFO L93 Difference]: Finished difference Result 986 states and 2264 transitions. [2022-11-02 21:08:44,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:44,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-02 21:08:44,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:44,259 INFO L225 Difference]: With dead ends: 986 [2022-11-02 21:08:44,259 INFO L226 Difference]: Without dead ends: 986 [2022-11-02 21:08:44,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:44,260 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 74 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:44,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 7 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:08:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-11-02 21:08:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 944. [2022-11-02 21:08:44,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 939 states have (on average 2.314164004259851) internal successors, (2173), 943 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 2173 transitions. [2022-11-02 21:08:44,287 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 2173 transitions. Word has length 25 [2022-11-02 21:08:44,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:44,288 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 2173 transitions. [2022-11-02 21:08:44,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:44,288 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 2173 transitions. [2022-11-02 21:08:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 21:08:44,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:44,292 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-02 21:08:44,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:08:44,293 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:44,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash 686496277, now seen corresponding path program 1 times [2022-11-02 21:08:44,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:44,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166372792] [2022-11-02 21:08:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:44,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:44,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:44,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166372792] [2022-11-02 21:08:44,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166372792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:44,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813470499] [2022-11-02 21:08:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:44,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:44,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:44,488 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:44,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:08:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:44,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:08:44,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:44,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:44,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813470499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:44,860 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:44,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-02 21:08:44,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202776754] [2022-11-02 21:08:44,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:44,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:08:44,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:44,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:08:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:08:44,862 INFO L87 Difference]: Start difference. First operand 944 states and 2173 transitions. Second operand has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:45,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:45,373 INFO L93 Difference]: Finished difference Result 1646 states and 3753 transitions. [2022-11-02 21:08:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 21:08:45,373 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-02 21:08:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:45,380 INFO L225 Difference]: With dead ends: 1646 [2022-11-02 21:08:45,380 INFO L226 Difference]: Without dead ends: 1646 [2022-11-02 21:08:45,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:08:45,381 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 295 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:45,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 14 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-11-02 21:08:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1394. [2022-11-02 21:08:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1389 states have (on average 2.3412526997840173) internal successors, (3252), 1393 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 3252 transitions. [2022-11-02 21:08:45,429 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 3252 transitions. Word has length 32 [2022-11-02 21:08:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:45,430 INFO L495 AbstractCegarLoop]: Abstraction has 1394 states and 3252 transitions. [2022-11-02 21:08:45,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 3252 transitions. [2022-11-02 21:08:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 21:08:45,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:45,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:45,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-02 21:08:45,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 21:08:45,648 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:45,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:45,649 INFO L85 PathProgramCache]: Analyzing trace with hash 797283250, now seen corresponding path program 2 times [2022-11-02 21:08:45,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:45,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812167913] [2022-11-02 21:08:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:45,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:08:45,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:45,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812167913] [2022-11-02 21:08:45,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812167913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:45,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185761566] [2022-11-02 21:08:45,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:08:45,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:45,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:45,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:45,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:08:46,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:08:46,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:46,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:08:46,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:46,044 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:08:46,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:46,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185761566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:46,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:46,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2022-11-02 21:08:46,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870590412] [2022-11-02 21:08:46,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:46,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:46,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:46,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:46,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:46,047 INFO L87 Difference]: Start difference. First operand 1394 states and 3252 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:46,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:46,131 INFO L93 Difference]: Finished difference Result 1388 states and 3222 transitions. [2022-11-02 21:08:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:08:46,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-02 21:08:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:46,148 INFO L225 Difference]: With dead ends: 1388 [2022-11-02 21:08:46,149 INFO L226 Difference]: Without dead ends: 1388 [2022-11-02 21:08:46,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:46,152 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 33 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:46,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:46,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-11-02 21:08:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1224. [2022-11-02 21:08:46,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 2.386065573770492) internal successors, (2911), 1223 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2911 transitions. [2022-11-02 21:08:46,185 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2911 transitions. Word has length 33 [2022-11-02 21:08:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:46,186 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 2911 transitions. [2022-11-02 21:08:46,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2911 transitions. [2022-11-02 21:08:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-02 21:08:46,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:46,188 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:46,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:46,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 21:08:46,416 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:46,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:46,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1585686062, now seen corresponding path program 1 times [2022-11-02 21:08:46,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:46,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973914413] [2022-11-02 21:08:46,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:46,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:08:46,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:46,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973914413] [2022-11-02 21:08:46,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973914413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:46,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302331143] [2022-11-02 21:08:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:46,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:46,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:46,658 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:46,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:08:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:46,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:08:46,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:08:46,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:08:46,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302331143] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:46,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:46,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2022-11-02 21:08:46,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121844585] [2022-11-02 21:08:46,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:46,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:08:46,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:46,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:08:46,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:08:46,973 INFO L87 Difference]: Start difference. First operand 1224 states and 2911 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:47,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:47,471 INFO L93 Difference]: Finished difference Result 2336 states and 5500 transitions. [2022-11-02 21:08:47,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:08:47,472 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-02 21:08:47,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:47,481 INFO L225 Difference]: With dead ends: 2336 [2022-11-02 21:08:47,485 INFO L226 Difference]: Without dead ends: 2336 [2022-11-02 21:08:47,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:08:47,486 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 119 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:47,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 11 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2022-11-02 21:08:47,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1618. [2022-11-02 21:08:47,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1614 states have (on average 2.4516728624535316) internal successors, (3957), 1617 states have internal predecessors, (3957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 3957 transitions. [2022-11-02 21:08:47,600 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 3957 transitions. Word has length 34 [2022-11-02 21:08:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:47,600 INFO L495 AbstractCegarLoop]: Abstraction has 1618 states and 3957 transitions. [2022-11-02 21:08:47,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 3957 transitions. [2022-11-02 21:08:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 21:08:47,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:47,603 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:47,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:47,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 21:08:47,832 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:47,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:47,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1474575852, now seen corresponding path program 2 times [2022-11-02 21:08:47,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:47,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332668323] [2022-11-02 21:08:47,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:47,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:48,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:48,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332668323] [2022-11-02 21:08:48,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332668323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:48,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435196885] [2022-11-02 21:08:48,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:08:48,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:48,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:48,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:48,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:08:48,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:08:48,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:48,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:08:48,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:48,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:48,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435196885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:48,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:48,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-11-02 21:08:48,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455485576] [2022-11-02 21:08:48,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:48,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:08:48,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:48,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:08:48,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:08:48,548 INFO L87 Difference]: Start difference. First operand 1618 states and 3957 transitions. Second operand has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:49,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:49,332 INFO L93 Difference]: Finished difference Result 2954 states and 7150 transitions. [2022-11-02 21:08:49,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 21:08:49,333 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-02 21:08:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:49,344 INFO L225 Difference]: With dead ends: 2954 [2022-11-02 21:08:49,345 INFO L226 Difference]: Without dead ends: 2954 [2022-11-02 21:08:49,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:08:49,346 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 341 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:49,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 21 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:08:49,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2022-11-02 21:08:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2032. [2022-11-02 21:08:49,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 2028 states have (on average 2.465483234714004) internal successors, (5000), 2031 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:49,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 5000 transitions. [2022-11-02 21:08:49,415 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 5000 transitions. Word has length 41 [2022-11-02 21:08:49,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:49,415 INFO L495 AbstractCegarLoop]: Abstraction has 2032 states and 5000 transitions. [2022-11-02 21:08:49,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:49,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 5000 transitions. [2022-11-02 21:08:49,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:08:49,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:49,418 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:49,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:49,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 21:08:49,644 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:49,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:49,645 INFO L85 PathProgramCache]: Analyzing trace with hash -120797615, now seen corresponding path program 2 times [2022-11-02 21:08:49,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:49,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275333301] [2022-11-02 21:08:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:49,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:08:49,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:49,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275333301] [2022-11-02 21:08:49,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275333301] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:49,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236554081] [2022-11-02 21:08:49,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:08:49,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:49,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:49,931 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:49,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 21:08:50,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:08:50,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:50,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:08:50,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:08:50,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:08:50,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236554081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:50,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:50,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-02 21:08:50,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501867314] [2022-11-02 21:08:50,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:50,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:08:50,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:50,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:08:50,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:08:50,356 INFO L87 Difference]: Start difference. First operand 2032 states and 5000 transitions. Second operand has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:51,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:51,095 INFO L93 Difference]: Finished difference Result 3886 states and 9455 transitions. [2022-11-02 21:08:51,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 21:08:51,096 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-02 21:08:51,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:51,116 INFO L225 Difference]: With dead ends: 3886 [2022-11-02 21:08:51,117 INFO L226 Difference]: Without dead ends: 3886 [2022-11-02 21:08:51,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=954, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:08:51,118 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 393 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:51,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 14 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:08:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2022-11-02 21:08:51,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 2518. [2022-11-02 21:08:51,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2514 states have (on average 2.5381861575178997) internal successors, (6381), 2517 states have internal predecessors, (6381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 6381 transitions. [2022-11-02 21:08:51,223 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 6381 transitions. Word has length 42 [2022-11-02 21:08:51,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:51,223 INFO L495 AbstractCegarLoop]: Abstraction has 2518 states and 6381 transitions. [2022-11-02 21:08:51,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 6381 transitions. [2022-11-02 21:08:51,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 21:08:51,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:51,229 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:51,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:51,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 21:08:51,444 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:51,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1496824941, now seen corresponding path program 3 times [2022-11-02 21:08:51,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:51,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77514312] [2022-11-02 21:08:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:51,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:51,800 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:08:51,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:51,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77514312] [2022-11-02 21:08:51,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77514312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:51,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386061579] [2022-11-02 21:08:51,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:08:51,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:51,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:51,804 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:51,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 21:08:52,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 21:08:52,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:52,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:08:52,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:08:52,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:08:52,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386061579] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:52,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:52,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 22 [2022-11-02 21:08:52,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94109135] [2022-11-02 21:08:52,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:52,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 21:08:52,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:52,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 21:08:52,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:08:52,552 INFO L87 Difference]: Start difference. First operand 2518 states and 6381 transitions. Second operand has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:53,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:53,419 INFO L93 Difference]: Finished difference Result 5554 states and 13313 transitions. [2022-11-02 21:08:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:08:53,419 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-02 21:08:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:53,437 INFO L225 Difference]: With dead ends: 5554 [2022-11-02 21:08:53,437 INFO L226 Difference]: Without dead ends: 5554 [2022-11-02 21:08:53,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=409, Invalid=1231, Unknown=0, NotChecked=0, Total=1640 [2022-11-02 21:08:53,438 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 391 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:53,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 21 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:08:53,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5554 states. [2022-11-02 21:08:53,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 2974. [2022-11-02 21:08:53,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2970 states have (on average 2.515151515151515) internal successors, (7470), 2973 states have internal predecessors, (7470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 7470 transitions. [2022-11-02 21:08:53,563 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 7470 transitions. Word has length 58 [2022-11-02 21:08:53,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:53,565 INFO L495 AbstractCegarLoop]: Abstraction has 2974 states and 7470 transitions. [2022-11-02 21:08:53,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 7470 transitions. [2022-11-02 21:08:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 21:08:53,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:53,572 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:53,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:53,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:53,794 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash -21006979, now seen corresponding path program 3 times [2022-11-02 21:08:53,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:53,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166309560] [2022-11-02 21:08:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:53,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:08:54,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:54,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166309560] [2022-11-02 21:08:54,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166309560] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:54,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111375380] [2022-11-02 21:08:54,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:08:54,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:54,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:54,288 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:54,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 21:08:54,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-02 21:08:54,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:54,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:08:54,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-02 21:08:54,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:54,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111375380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:54,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:54,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 19 [2022-11-02 21:08:54,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053984475] [2022-11-02 21:08:54,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:54,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:54,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:54,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:54,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:08:54,542 INFO L87 Difference]: Start difference. First operand 2974 states and 7470 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:54,826 INFO L93 Difference]: Finished difference Result 3244 states and 8057 transitions. [2022-11-02 21:08:54,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:54,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-02 21:08:54,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:54,846 INFO L225 Difference]: With dead ends: 3244 [2022-11-02 21:08:54,855 INFO L226 Difference]: Without dead ends: 3244 [2022-11-02 21:08:54,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:08:54,857 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 63 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:54,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:08:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2022-11-02 21:08:54,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 2710. [2022-11-02 21:08:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2707 states have (on average 2.5622460288141853) internal successors, (6936), 2709 states have internal predecessors, (6936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 6936 transitions. [2022-11-02 21:08:54,944 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 6936 transitions. Word has length 65 [2022-11-02 21:08:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:54,944 INFO L495 AbstractCegarLoop]: Abstraction has 2710 states and 6936 transitions. [2022-11-02 21:08:54,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 6936 transitions. [2022-11-02 21:08:54,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:08:54,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:54,949 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:54,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:55,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:55,168 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:55,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:55,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1696308830, now seen corresponding path program 1 times [2022-11-02 21:08:55,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:55,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162859299] [2022-11-02 21:08:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:55,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:08:55,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:55,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162859299] [2022-11-02 21:08:55,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162859299] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:55,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695276562] [2022-11-02 21:08:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:55,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:55,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:55,568 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:55,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 21:08:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:55,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:08:55,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:08:55,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:08:56,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695276562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:56,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:56,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-02 21:08:56,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812836906] [2022-11-02 21:08:56,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:56,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:08:56,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:08:56,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:08:56,169 INFO L87 Difference]: Start difference. First operand 2710 states and 6936 transitions. Second operand has 22 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:56,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:56,933 INFO L93 Difference]: Finished difference Result 7090 states and 17673 transitions. [2022-11-02 21:08:56,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 21:08:56,934 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:08:56,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:56,960 INFO L225 Difference]: With dead ends: 7090 [2022-11-02 21:08:56,961 INFO L226 Difference]: Without dead ends: 7090 [2022-11-02 21:08:56,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 21:08:56,964 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 345 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:56,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 15 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:08:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7090 states. [2022-11-02 21:08:57,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7090 to 3884. [2022-11-02 21:08:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3881 states have (on average 2.6292192733831485) internal successors, (10204), 3883 states have internal predecessors, (10204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 10204 transitions. [2022-11-02 21:08:57,091 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 10204 transitions. Word has length 66 [2022-11-02 21:08:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:57,093 INFO L495 AbstractCegarLoop]: Abstraction has 3884 states and 10204 transitions. [2022-11-02 21:08:57,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 10204 transitions. [2022-11-02 21:08:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 21:08:57,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:57,102 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:57,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:57,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-02 21:08:57,323 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:08:57,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash 708154296, now seen corresponding path program 4 times [2022-11-02 21:08:57,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:57,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583391549] [2022-11-02 21:08:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:57,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:57,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:57,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583391549] [2022-11-02 21:08:57,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583391549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:57,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573708530] [2022-11-02 21:08:57,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:08:57,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:57,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:57,868 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:57,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 21:08:58,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:08:58,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:58,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:08:58,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:58,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:58,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573708530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:58,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:58,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-11-02 21:08:58,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533969017] [2022-11-02 21:08:58,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:58,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:08:58,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:58,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:08:58,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=962, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:08:58,749 INFO L87 Difference]: Start difference. First operand 3884 states and 10204 transitions. Second operand has 36 states, 35 states have (on average 4.514285714285714) internal successors, (158), 35 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:00,208 INFO L93 Difference]: Finished difference Result 8800 states and 22074 transitions. [2022-11-02 21:09:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-02 21:09:00,208 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.514285714285714) internal successors, (158), 35 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-02 21:09:00,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:00,239 INFO L225 Difference]: With dead ends: 8800 [2022-11-02 21:09:00,239 INFO L226 Difference]: Without dead ends: 8800 [2022-11-02 21:09:00,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=902, Invalid=2880, Unknown=0, NotChecked=0, Total=3782 [2022-11-02 21:09:00,241 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 750 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:00,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 28 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:09:00,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8800 states. [2022-11-02 21:09:00,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8800 to 4892. [2022-11-02 21:09:00,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4892 states, 4889 states have (on average 2.6467580282266314) internal successors, (12940), 4891 states have internal predecessors, (12940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:00,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 12940 transitions. [2022-11-02 21:09:00,411 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 12940 transitions. Word has length 73 [2022-11-02 21:09:00,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:00,412 INFO L495 AbstractCegarLoop]: Abstraction has 4892 states and 12940 transitions. [2022-11-02 21:09:00,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.514285714285714) internal successors, (158), 35 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:00,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 12940 transitions. [2022-11-02 21:09:00,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 21:09:00,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:00,423 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:00,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:00,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:00,644 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:09:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:00,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1771568856, now seen corresponding path program 5 times [2022-11-02 21:09:00,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:00,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111126568] [2022-11-02 21:09:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:00,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:01,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:01,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111126568] [2022-11-02 21:09:01,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111126568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:01,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621811559] [2022-11-02 21:09:01,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:09:01,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:01,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:01,230 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:01,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 21:09:01,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-02 21:09:01,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:09:01,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:09:01,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:01,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:01,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621811559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:01,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:01,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-11-02 21:09:01,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360642025] [2022-11-02 21:09:01,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:01,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 21:09:01,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:01,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 21:09:01,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:09:01,881 INFO L87 Difference]: Start difference. First operand 4892 states and 12940 transitions. Second operand has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:02,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:02,754 INFO L93 Difference]: Finished difference Result 15016 states and 39395 transitions. [2022-11-02 21:09:02,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 21:09:02,755 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-02 21:09:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:02,805 INFO L225 Difference]: With dead ends: 15016 [2022-11-02 21:09:02,806 INFO L226 Difference]: Without dead ends: 15016 [2022-11-02 21:09:02,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=344, Invalid=1216, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 21:09:02,807 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 359 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:02,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 16 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:09:02,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15016 states. [2022-11-02 21:09:03,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15016 to 11474. [2022-11-02 21:09:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11474 states, 11471 states have (on average 2.790079330485572) internal successors, (32005), 11473 states have internal predecessors, (32005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11474 states to 11474 states and 32005 transitions. [2022-11-02 21:09:03,175 INFO L78 Accepts]: Start accepts. Automaton has 11474 states and 32005 transitions. Word has length 73 [2022-11-02 21:09:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:03,175 INFO L495 AbstractCegarLoop]: Abstraction has 11474 states and 32005 transitions. [2022-11-02 21:09:03,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 11474 states and 32005 transitions. [2022-11-02 21:09:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:09:03,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:03,193 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1] [2022-11-02 21:09:03,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:03,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-02 21:09:03,420 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:09:03,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:03,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1585100649, now seen corresponding path program 2 times [2022-11-02 21:09:03,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:03,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275573565] [2022-11-02 21:09:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:03,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:04,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:04,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275573565] [2022-11-02 21:09:04,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275573565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:04,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438148248] [2022-11-02 21:09:04,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:09:04,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:04,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:04,280 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:04,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 21:09:04,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:09:04,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:09:04,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 21:09:04,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:04,689 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:04,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:05,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438148248] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:05,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:05,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 40 [2022-11-02 21:09:05,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601812051] [2022-11-02 21:09:05,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:05,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 21:09:05,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:05,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 21:09:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=1260, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 21:09:05,272 INFO L87 Difference]: Start difference. First operand 11474 states and 32005 transitions. Second operand has 42 states, 41 states have (on average 4.121951219512195) internal successors, (169), 41 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:06,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:06,693 INFO L93 Difference]: Finished difference Result 13638 states and 36731 transitions. [2022-11-02 21:09:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-02 21:09:06,693 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 4.121951219512195) internal successors, (169), 41 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-02 21:09:06,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:06,733 INFO L225 Difference]: With dead ends: 13638 [2022-11-02 21:09:06,733 INFO L226 Difference]: Without dead ends: 13638 [2022-11-02 21:09:06,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1062, Invalid=2598, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 21:09:06,736 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 913 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:06,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 30 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:09:06,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13638 states. [2022-11-02 21:09:07,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13638 to 12552. [2022-11-02 21:09:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12552 states, 12549 states have (on average 2.7476292931707706) internal successors, (34480), 12551 states have internal predecessors, (34480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 34480 transitions. [2022-11-02 21:09:07,091 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 34480 transitions. Word has length 80 [2022-11-02 21:09:07,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:07,091 INFO L495 AbstractCegarLoop]: Abstraction has 12552 states and 34480 transitions. [2022-11-02 21:09:07,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 4.121951219512195) internal successors, (169), 41 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 34480 transitions. [2022-11-02 21:09:07,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:09:07,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:07,110 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:07,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:07,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-02 21:09:07,324 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:09:07,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:07,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1040905502, now seen corresponding path program 4 times [2022-11-02 21:09:07,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:07,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965392009] [2022-11-02 21:09:07,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:07,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:08,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:08,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965392009] [2022-11-02 21:09:08,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965392009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:08,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558842600] [2022-11-02 21:09:08,087 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:09:08,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:08,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:08,089 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:08,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 21:09:08,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:09:08,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:09:08,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 21:09:08,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:08,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:08,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558842600] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:08,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:08,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-11-02 21:09:08,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316295020] [2022-11-02 21:09:08,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:08,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 21:09:08,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:08,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 21:09:08,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:09:09,000 INFO L87 Difference]: Start difference. First operand 12552 states and 34480 transitions. Second operand has 36 states, 35 states have (on average 4.571428571428571) internal successors, (160), 35 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:10,370 INFO L93 Difference]: Finished difference Result 29168 states and 78076 transitions. [2022-11-02 21:09:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-02 21:09:10,371 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.571428571428571) internal successors, (160), 35 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-02 21:09:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:10,501 INFO L225 Difference]: With dead ends: 29168 [2022-11-02 21:09:10,502 INFO L226 Difference]: Without dead ends: 29168 [2022-11-02 21:09:10,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=907, Invalid=2875, Unknown=0, NotChecked=0, Total=3782 [2022-11-02 21:09:10,503 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 806 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:10,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 27 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:09:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29168 states. [2022-11-02 21:09:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29168 to 17816. [2022-11-02 21:09:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17816 states, 17813 states have (on average 2.774265985516196) internal successors, (49418), 17815 states have internal predecessors, (49418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17816 states to 17816 states and 49418 transitions. [2022-11-02 21:09:10,992 INFO L78 Accepts]: Start accepts. Automaton has 17816 states and 49418 transitions. Word has length 82 [2022-11-02 21:09:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:10,993 INFO L495 AbstractCegarLoop]: Abstraction has 17816 states and 49418 transitions. [2022-11-02 21:09:10,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.571428571428571) internal successors, (160), 35 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 17816 states and 49418 transitions. [2022-11-02 21:09:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 21:09:11,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:11,102 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:11,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:11,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:11,316 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:09:11,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:11,317 INFO L85 PathProgramCache]: Analyzing trace with hash -802958103, now seen corresponding path program 2 times [2022-11-02 21:09:11,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:11,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625821662] [2022-11-02 21:09:11,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:11,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:11,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:11,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625821662] [2022-11-02 21:09:11,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625821662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:11,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604945121] [2022-11-02 21:09:11,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:09:11,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:11,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:11,904 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:11,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 21:09:12,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:09:12,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:09:12,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 21:09:12,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:12,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:12,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604945121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:12,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:12,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-11-02 21:09:12,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818216284] [2022-11-02 21:09:12,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:12,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 21:09:12,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:12,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 21:09:12,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:09:12,787 INFO L87 Difference]: Start difference. First operand 17816 states and 49418 transitions. Second operand has 34 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:14,131 INFO L93 Difference]: Finished difference Result 33210 states and 89367 transitions. [2022-11-02 21:09:14,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 21:09:14,131 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-11-02 21:09:14,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:14,205 INFO L225 Difference]: With dead ends: 33210 [2022-11-02 21:09:14,205 INFO L226 Difference]: Without dead ends: 33210 [2022-11-02 21:09:14,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=772, Invalid=2650, Unknown=0, NotChecked=0, Total=3422 [2022-11-02 21:09:14,207 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 681 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:14,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 23 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:09:14,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33210 states. [2022-11-02 21:09:14,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33210 to 14506. [2022-11-02 21:09:14,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14506 states, 14503 states have (on average 2.7451561745845687) internal successors, (39813), 14505 states have internal predecessors, (39813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14506 states to 14506 states and 39813 transitions. [2022-11-02 21:09:14,835 INFO L78 Accepts]: Start accepts. Automaton has 14506 states and 39813 transitions. Word has length 90 [2022-11-02 21:09:14,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:14,836 INFO L495 AbstractCegarLoop]: Abstraction has 14506 states and 39813 transitions. [2022-11-02 21:09:14,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 14506 states and 39813 transitions. [2022-11-02 21:09:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:14,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:14,859 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:14,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:15,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:15,087 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:09:15,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:15,088 INFO L85 PathProgramCache]: Analyzing trace with hash 678380266, now seen corresponding path program 3 times [2022-11-02 21:09:15,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:15,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191156331] [2022-11-02 21:09:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:15,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:09:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:15,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191156331] [2022-11-02 21:09:15,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191156331] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:15,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466187525] [2022-11-02 21:09:15,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:09:15,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:15,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:15,733 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:15,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 21:09:16,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-02 21:09:16,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:09:16,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:09:16,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 262 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:09:16,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 262 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:09:17,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466187525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:17,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:17,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 30 [2022-11-02 21:09:17,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690791351] [2022-11-02 21:09:17,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:17,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 21:09:17,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 21:09:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2022-11-02 21:09:17,253 INFO L87 Difference]: Start difference. First operand 14506 states and 39813 transitions. Second operand has 32 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:18,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:18,531 INFO L93 Difference]: Finished difference Result 60870 states and 166179 transitions. [2022-11-02 21:09:18,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-02 21:09:18,532 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:18,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:18,667 INFO L225 Difference]: With dead ends: 60870 [2022-11-02 21:09:18,667 INFO L226 Difference]: Without dead ends: 60870 [2022-11-02 21:09:18,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=670, Invalid=2410, Unknown=0, NotChecked=0, Total=3080 [2022-11-02 21:09:18,668 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 709 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:18,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 20 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:09:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60870 states. [2022-11-02 21:09:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60870 to 42546. [2022-11-02 21:09:19,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42546 states, 42543 states have (on average 2.8365888630326963) internal successors, (120677), 42545 states have internal predecessors, (120677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42546 states to 42546 states and 120677 transitions. [2022-11-02 21:09:19,668 INFO L78 Accepts]: Start accepts. Automaton has 42546 states and 120677 transitions. Word has length 98 [2022-11-02 21:09:19,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:19,668 INFO L495 AbstractCegarLoop]: Abstraction has 42546 states and 120677 transitions. [2022-11-02 21:09:19,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 42546 states and 120677 transitions. [2022-11-02 21:09:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-02 21:09:19,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:19,714 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:19,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:19,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-02 21:09:19,915 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:09:19,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1411824580, now seen corresponding path program 6 times [2022-11-02 21:09:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:19,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218322409] [2022-11-02 21:09:19,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:19,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:21,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:21,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218322409] [2022-11-02 21:09:21,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218322409] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:21,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023827780] [2022-11-02 21:09:21,173 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:09:21,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:21,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:21,176 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:21,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 21:09:21,823 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-11-02 21:09:21,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:09:21,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 21:09:21,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:22,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:22,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023827780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:22,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:22,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 44 [2022-11-02 21:09:22,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042217834] [2022-11-02 21:09:22,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:22,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-02 21:09:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-02 21:09:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1609, Unknown=0, NotChecked=0, Total=2070 [2022-11-02 21:09:22,593 INFO L87 Difference]: Start difference. First operand 42546 states and 120677 transitions. Second operand has 46 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 45 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:24,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:24,878 INFO L93 Difference]: Finished difference Result 99954 states and 277226 transitions. [2022-11-02 21:09:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-02 21:09:24,878 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 45 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-11-02 21:09:24,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:25,308 INFO L225 Difference]: With dead ends: 99954 [2022-11-02 21:09:25,308 INFO L226 Difference]: Without dead ends: 99954 [2022-11-02 21:09:25,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1734 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1589, Invalid=5721, Unknown=0, NotChecked=0, Total=7310 [2022-11-02 21:09:25,310 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 898 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:25,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 39 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:09:25,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99954 states. [2022-11-02 21:09:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99954 to 59940. [2022-11-02 21:09:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59940 states, 59937 states have (on average 2.839281245307573) internal successors, (170178), 59939 states have internal predecessors, (170178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59940 states to 59940 states and 170178 transitions. [2022-11-02 21:09:27,290 INFO L78 Accepts]: Start accepts. Automaton has 59940 states and 170178 transitions. Word has length 105 [2022-11-02 21:09:27,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:27,291 INFO L495 AbstractCegarLoop]: Abstraction has 59940 states and 170178 transitions. [2022-11-02 21:09:27,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 45 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand 59940 states and 170178 transitions. [2022-11-02 21:09:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-02 21:09:27,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:27,324 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:27,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:27,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:27,525 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:09:27,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:27,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1831370484, now seen corresponding path program 7 times [2022-11-02 21:09:27,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:27,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325389323] [2022-11-02 21:09:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:27,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:28,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:28,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325389323] [2022-11-02 21:09:28,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325389323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:28,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141965728] [2022-11-02 21:09:28,518 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 21:09:28,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:28,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:28,520 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:28,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-02 21:09:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:28,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 21:09:28,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:29,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:29,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141965728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:29,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:29,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 38 [2022-11-02 21:09:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233353944] [2022-11-02 21:09:29,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:29,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-02 21:09:29,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:29,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-02 21:09:29,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1236, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 21:09:29,644 INFO L87 Difference]: Start difference. First operand 59940 states and 170178 transitions. Second operand has 40 states, 39 states have (on average 4.871794871794871) internal successors, (190), 39 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:32,129 INFO L93 Difference]: Finished difference Result 187126 states and 525308 transitions. [2022-11-02 21:09:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-02 21:09:32,130 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.871794871794871) internal successors, (190), 39 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-11-02 21:09:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:33,008 INFO L225 Difference]: With dead ends: 187126 [2022-11-02 21:09:33,008 INFO L226 Difference]: Without dead ends: 187126 [2022-11-02 21:09:33,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1067, Invalid=3903, Unknown=0, NotChecked=0, Total=4970 [2022-11-02 21:09:33,010 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 714 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:33,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 35 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:09:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187126 states. [2022-11-02 21:09:36,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187126 to 129674. [2022-11-02 21:09:36,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129674 states, 129671 states have (on average 2.873402688342035) internal successors, (372597), 129673 states have internal predecessors, (372597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129674 states to 129674 states and 372597 transitions. [2022-11-02 21:09:36,681 INFO L78 Accepts]: Start accepts. Automaton has 129674 states and 372597 transitions. Word has length 105 [2022-11-02 21:09:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:36,682 INFO L495 AbstractCegarLoop]: Abstraction has 129674 states and 372597 transitions. [2022-11-02 21:09:36,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.871794871794871) internal successors, (190), 39 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 129674 states and 372597 transitions. [2022-11-02 21:09:36,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-02 21:09:36,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:36,750 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:36,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:36,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-02 21:09:36,964 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:09:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2007205080, now seen corresponding path program 5 times [2022-11-02 21:09:36,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:36,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202105653] [2022-11-02 21:09:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:36,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:38,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:38,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202105653] [2022-11-02 21:09:38,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202105653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:38,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138299480] [2022-11-02 21:09:38,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:09:38,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:38,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:38,431 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:38,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-02 21:09:39,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-11-02 21:09:39,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:09:39,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 21:09:39,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:39,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:39,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138299480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:39,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:39,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 50 [2022-11-02 21:09:39,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862101539] [2022-11-02 21:09:39,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:39,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 21:09:39,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:39,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 21:09:39,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=655, Invalid=1997, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 21:09:39,932 INFO L87 Difference]: Start difference. First operand 129674 states and 372597 transitions. Second operand has 52 states, 51 states have (on average 4.392156862745098) internal successors, (224), 51 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:43,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:43,843 INFO L93 Difference]: Finished difference Result 266464 states and 754964 transitions. [2022-11-02 21:09:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-02 21:09:43,844 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.392156862745098) internal successors, (224), 51 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-11-02 21:09:43,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:44,668 INFO L225 Difference]: With dead ends: 266464 [2022-11-02 21:09:44,668 INFO L226 Difference]: Without dead ends: 266464 [2022-11-02 21:09:44,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2011, Invalid=6545, Unknown=0, NotChecked=0, Total=8556 [2022-11-02 21:09:44,671 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1380 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:44,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 34 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:09:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266464 states. [2022-11-02 21:09:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266464 to 166898. [2022-11-02 21:09:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166898 states, 166895 states have (on average 2.8713202912010547) internal successors, (479209), 166897 states have internal predecessors, (479209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166898 states to 166898 states and 479209 transitions. [2022-11-02 21:09:50,684 INFO L78 Accepts]: Start accepts. Automaton has 166898 states and 479209 transitions. Word has length 114 [2022-11-02 21:09:50,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:50,684 INFO L495 AbstractCegarLoop]: Abstraction has 166898 states and 479209 transitions. [2022-11-02 21:09:50,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.392156862745098) internal successors, (224), 51 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:50,685 INFO L276 IsEmpty]: Start isEmpty. Operand 166898 states and 479209 transitions. [2022-11-02 21:09:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:09:50,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:50,789 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:50,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-02 21:09:51,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:51,012 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:09:51,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:51,012 INFO L85 PathProgramCache]: Analyzing trace with hash 377147635, now seen corresponding path program 4 times [2022-11-02 21:09:51,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:51,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86492689] [2022-11-02 21:09:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:51,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 579 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:52,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:52,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86492689] [2022-11-02 21:09:52,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86492689] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:52,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418931269] [2022-11-02 21:09:52,424 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:09:52,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:52,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,425 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-02 21:09:52,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:09:52,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:09:52,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 21:09:52,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 579 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:52,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 579 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:09:53,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418931269] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:53,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:53,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 48 [2022-11-02 21:09:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393658961] [2022-11-02 21:09:53,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:53,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 21:09:53,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 21:09:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 21:09:53,595 INFO L87 Difference]: Start difference. First operand 166898 states and 479209 transitions. Second operand has 50 states, 49 states have (on average 4.571428571428571) internal successors, (224), 49 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:57,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:57,430 INFO L93 Difference]: Finished difference Result 277238 states and 785341 transitions. [2022-11-02 21:09:57,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-02 21:09:57,430 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 4.571428571428571) internal successors, (224), 49 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-11-02 21:09:57,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:59,046 INFO L225 Difference]: With dead ends: 277238 [2022-11-02 21:09:59,046 INFO L226 Difference]: Without dead ends: 277238 [2022-11-02 21:09:59,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1998 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1800, Invalid=6210, Unknown=0, NotChecked=0, Total=8010 [2022-11-02 21:09:59,048 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1091 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:59,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 33 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:09:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277238 states. [2022-11-02 21:10:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277238 to 155376. [2022-11-02 21:10:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155376 states, 155373 states have (on average 2.8660706815212422) internal successors, (445310), 155375 states have internal predecessors, (445310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155376 states to 155376 states and 445310 transitions. [2022-11-02 21:10:04,824 INFO L78 Accepts]: Start accepts. Automaton has 155376 states and 445310 transitions. Word has length 122 [2022-11-02 21:10:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:04,825 INFO L495 AbstractCegarLoop]: Abstraction has 155376 states and 445310 transitions. [2022-11-02 21:10:04,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 4.571428571428571) internal successors, (224), 49 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 155376 states and 445310 transitions. [2022-11-02 21:10:04,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-02 21:10:04,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:04,990 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:05,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:05,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-02 21:10:05,191 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:10:05,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:05,192 INFO L85 PathProgramCache]: Analyzing trace with hash 595512578, now seen corresponding path program 5 times [2022-11-02 21:10:05,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:05,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453174170] [2022-11-02 21:10:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:05,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:10:06,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:06,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453174170] [2022-11-02 21:10:06,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453174170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:06,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346010815] [2022-11-02 21:10:06,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:10:06,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:06,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:06,361 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:06,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39a24639-d740-48d3-844d-a838dc41e6ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-02 21:10:07,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-11-02 21:10:07,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:07,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 21:10:07,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:07,650 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:10:07,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:10:08,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346010815] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:08,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:08,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 22] total 46 [2022-11-02 21:10:08,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569431038] [2022-11-02 21:10:08,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:08,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-02 21:10:08,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:08,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-02 21:10:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1767, Unknown=0, NotChecked=0, Total=2256 [2022-11-02 21:10:08,258 INFO L87 Difference]: Start difference. First operand 155376 states and 445310 transitions. Second operand has 48 states, 47 states have (on average 4.76595744680851) internal successors, (224), 47 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:13,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:13,279 INFO L93 Difference]: Finished difference Result 419334 states and 1185199 transitions. [2022-11-02 21:10:13,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-02 21:10:13,281 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.76595744680851) internal successors, (224), 47 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-11-02 21:10:13,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted.